Lubricator for piston-rods



(No Model.)

' S.-HOPFMASTER &'G.- W- A LUBRIGATOB. FOR PISTON RODS.

No. 263,905.. Patented Sept. 5,1882.

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I UNITED STATES PATENT OFFICE,

SOLOMON HOFFMASTER, OF HARRISBURG, AND GEORGE W. ARTHUR, OF

ALTOONA, PENNSYLVANIA.

V LUBRICATOR FOR PISTON-RODS.

SPECIFICATION forming part of Letters Patent No. 263,905, datedSeptember 5, 1882.

Application filed November :8, 1881. (No model.) i

To all whom it may concern Be it known that we, SoLoMoN HOFFMAS- TER, acitizen of the United States, residing at Harrisburg, in the county ofDauphin and State of Pennsylvania, and GEORGE W. AR-

THUR, a citizen of the United States, residing at Altoona, in the countyof Blair and State of Pennsylvania, have invented a new and usefulImprovement in Lubricators for Piston- 1o Rods, Valve-Stems, 850., ofwhich the following is a specification.

Our invention consists in the combination, with a pistonrod orvalve-stem, of a gland having an annular chamber, for containing wasteor other suitable materials, provided with a mouth for the insertion ofthe same and a cover to the mouth, as hereinafter fully described.

In the accompanying drawings, which make a part of this specification,Figure l is afront view of the gland A. Fig. 2 represents a sideelevation of the gland in connection with the rod B. Fig. 3 is across-section at the broken line as a: of Fig. 2. Fig. 4 is a verticallongitudinal section through the line 3 y of Fig. 1, the piston-rodbeing in side elevation. Fig. 5 is a top View of the cover E and springG in a single piece. Fig. 6 is an edge view of the same.

0 Like letters of reference in all the figures indicate the same parts.

A represents afollower or gland having our improvements for lubricatingthe rod B, and a the flange of the gland having bolt-holes. O is achamber for containing waste D or other suitable material to besaturated with oil for lubricating the rod 13. It surrounds the rod andextends through the upper edge of .the flange a, which is widened atthis part 40 to give as great width as practicable to the chamber atsuch point for increasing its capacity for holding the material, andalso to provide for filling the chamber therewith without having aremovable part to the gland for that purpose, thus accomplishing thedesideratum of making the gland in a single piece.

Another object of this construction is the increasing the capacity ofthe chamber. The mouth is provided with a cover, E, to protect the wastefrom dirt or dust. The cover is held in its place by means of the springG or other suitable means, which may afford convenience in theexpeditious removal of the cover for access to the chamber for refillingor renewal of the Waste or resupplying it with oil. The latter operationmay be accomplished, however, through the small opening (1 in the coverE.

The-cover and spring may be made in a single piece, as represented inthe drawings.

To prevent the waste of oil at each outward stroke of the piston-rod weconbine with the rod and the front end of' the gland a swab, H, whichsurrounds the rod and is held suflicicntly tight against it and againstthe end of the gland by means of the cover I, which also serves toprotect the swab from dirt or dust.

The cover is confined in its place by means of the screwsff. Oneot'themmay be connected with the ear 0 when it is desirable to turn the coverpartly around for want of room between the holes b.

There is a perforation, g, through the under side of the gland in therear of the chamber 0, for the escape of condensed steam, for thepurpose of preventing it being blown out 7 through the absorbing andlubricating filling D.

It will be seen that ample means are afforded by our improvements forkeeping up the necessary supply of oil and also of preventing 8o thewaste of oil which occurs with other 1ubricators, and that greatcompactness is accomplished in dispensing with the ordinary oilcup, andsimplicity and cheapness of the lubricator' are attained. 8

WVe claim as our inventiom- The combination, with a piston-rod or valvestem, of the gland A,having an annular chamher, 0, terminating with awide mouth at the upper edge of the flange for increasing the ca- 0pacit-y of the chamber and providing for filling the same, the mouthbeing provided with the cover E, substantially in the manner and for thepurpose described.

SOLOMON HOFFMASTER. G. W. ARTHUR.

Witnesses:

PHILIP HAL'roN, J OHN OTooLn.

